Optimizing the Canadian Forces Battle Trench for Improved Blast Protection


  1. Hlady, S.
  2. Donahue, L.
  3. Sharman, B.
  4. Yoshinaka, A.
  5. Murray, S.B.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN);MARTEC Ltd, Halifax NS (CAN)
The design of the standard Canadian Forces two-soldier battle trench has one fighting bay and one protective shelter bay (an adit) in a straight line. This study was conducted to determine the effect of bay size and adit location on personnel vulnerability inside the trench. Numerical analyses were run on straight, L-shaped, and T-shaped designs; bay size and adit location were varied. Personnel vulnerability inside each trench was evaluated using an equivalent Bowen criteria. The numerical results showed that the vulnerability levels in the T-saped trench were usually slightly lower than either the L-shaped or straight trench. Nevertheless, the T-trench hinders communication between soldiers in each bay, requires more excavation than the other designs, and is more complicated to construct. Based on the numerical results, experimental field trials were performed with the straight and L-shaped trenches. Field trials were used to validate the numerical results and to assess the effectiveness of Canadian Forces-issue "Shield Personal Protective" (a.k.a. blast blankets) covering the adit entrances. During some of the field trials, a blast test device was used to simulate a soldier in the adit. Neither the blast blankets nor the blast test device were simulated in the numerical analyses. The numerical results showed that: increasing adit length always resulted in a reduction in vulnerability levels inside the adit, and that the position "kneeling in the firing bay" was safer for p
Report Number
DRDC-SUFFIELD-SL-2006-154 — Scientific Literature
Date of publication
01 Jan 2006
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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